Yokosuka R2Y
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Commissioned for the Imperial Japanese Navy after the Yokosuka R1Y design was cancelled due to its disappointing performance estimates, the R2Y borrowed from the German pre-war Heinkel He 119 in its use of coupled engines driving a single propeller. It also featured a tricycle undercarriage arrangement that was possibly influenced by the Messerschmitt Me 509.
Completed in April 1945, the prototype made a short flight on May 8, but was destroyed in a US air raid only a few days later, thus ending development.
A proposal was also made to develop the R2Y into a turbojet-powered light bomber by replacing its piston engines with two Ishikawajima Ne-330s. Designated the R2Y2 Keiun-Kai, little progress on the design was made before the end of the war.
Specifications (R2Y1)
General characteristics
- Crew: 2
- Length: 13.05 m (42 ft 10 in)
- Wingspan: 14.00 m (45 ft 11 in)
- Height: 4.24 m (13 ft 9 in)
- Wing area: 34.0 m² (366 ft²)
- Empty: 6,015 kg (13,261 lb)
- Loaded: 8,100 kg (17,857 lb)
- Maximum takeoff: 9,400 kg (20,723 lb)
- Powerplant: 1× Aichi Ha-70; 2,536 kW (3,400 hp)
Performance (projected)
- Maximum speed: 770 km/h (480 mph)
- Range: 3,610 km (2,251 miles)
- Service ceiling: 11,700 m (38,376 ft)
- Rate of climb: 476 m/min (1,561 ft/min)
- Wing loading: 238 kg/m² (49 lb/ft²)
- Power/Mass: 0.31 kW/kg (0.19 hp/lb)
Related content
Related development: Heinkel He 119Comparable aircraft:
Designation sequence: R1Y - R2Y
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